Coastal Marsh
Scenario model
Current ecosystem state
Select a state
Management practices/drivers
Select a transition or restoration pathway
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Transition T1A
State 1 Reference transitions to State 2 Cultivated removal of native vegetation and planting taro (Alocasia macrorrhizos).
More details -
Transition T1B
State 1 Reference transitions to State 4 Landfilled by intentional filling of a marsh to create construction sites.
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Transition T2A
State 2 Cultivated transitions to State 3 Abandoned with abandonment of taro fields, which are quickly invaded by mostly introduced species.
More details -
Transition T2B
State 2 Cultivated transitions to State 4 Landfilled by intentional filling of cropland to create construction sites.
More details -
Restoration pathway R3A
State 3 Abandoned can be restored to State 2 Cultivated by weed removal and resumption of taro cultivation.
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Transition T3A
State 3 Abandoned transitions to State 4 Landfilled by intentional filling of cropland to create construction sites.
More details -
No transition or restoration pathway between the selected states has been described
Target ecosystem state
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Description
This state consists of two community phases dominated by dense stands of sedges, grasses, and ferns.
Storms that disturb or kill native vegetation can allow a rapid phase change from 1.1, which has all native species, to 1.2, which has a mix of native and introduced species. Particularly strong storms have resulted in loss of one or more native species until propagules from elsewhere are able to repopulate these species. Disturbance of native coastal marsh by pigs creates a more gradual invasion of introduced species (Forestry Program, Division of Community and Natural Resources, 2010; Whistler, 2002).
Submodel
Description
This state consists of one community phase that has been cleared of vegetation and cultivated.
Submodel
Description
This state consists of one community phase dominated by weedy, introduced plant species.
Submodel
Mechanism
The Reference State (1) transitions to the Cultivated State (2) by the removal of native vegetation and planting taro (Alocasia macrorrhizos).
Mechanism
The Reference State (1) transitions to the Landfilled State (4) by intentional filling of a marsh to create construction sites.
Mechanism
The Cultivated State (2) transitions to the Abandoned State (3) with abandonment of taro fields, which are quickly invaded by mostly introduced species.
Mechanism
The Cultivated State (2) transitions to the Landfilled State (4) by intentional filling of cropland to create construction sites.
Mechanism
The Abandoned State (3) can be restored to the Cultivated State (2) by weed removal and resuming taro cultivation.
Model keys
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The Ecosystem Dynamics Interpretive Tool is an information system framework developed by the USDA-ARS Jornada Experimental Range, USDA Natural Resources Conservation Service, and New Mexico State University.